mirror of
https://github.com/php/doc-es.git
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Pedro Antonio Gil Rodríguez
41bf49796f
git-svn-id: https://svn.php.net/repository/phpdoc/es/trunk@337046 c90b9560-bf6c-de11-be94-00142212c4b1
125 lines
3.4 KiB
XML
125 lines
3.4 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: e39cacd755c48dcdd163c02cfc45bd762f838cde Maintainer: seros Status: ready -->
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<!-- Reviewed: no -->
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<refentry xml:id="mongocollection.parallelcollectionscan" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>MongoCollection::parallelCollectionScan</refname>
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<refpurpose>Devuelve un array con cursores para recorrer una colección completa en paralelo</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<modifier>public</modifier> <type>array[MongoCommandCursor]</type><methodname>MongoCollection::parallelCollectionScan</methodname>
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<methodparam><type>int</type><parameter>num_cursors</parameter></methodparam>
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</methodsynopsis>
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<para>
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Este método devuelve un array con un número máximo de <literal>num_cursors</literal>
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cursores. Recorrer uno de los cursores devueltos iterará en un conjunto
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parcial de documentos de una colección. Recorrer todos los cursores devueltos
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resultará en la obtención de cada documento de la colección.
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</para>
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<para>
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Este método es una envoltura para el comando <literal>parallelCollectionScan</literal>
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de MongoDB.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term>
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<parameter>num_cursors</parameter>
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</term>
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<listitem>
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<para>
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El número de cursores a solicitar al servidor. Observe que el
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servidor puede devolver menos cursores que los solicitados.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Devuelve un array de objetos <classname>MongoCommandCursor</classname>.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<example>
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<title>Ejmplo de <function>MongoCollection::parallelCollectionScan</function></title>
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<para>
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Devolver todos los documentos de una colección empleando varios cursores.
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$m = new MongoClient;
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$c = $m->demo->cities;
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/* Solicitar tres cursores */
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$cursores = $c->parallelCollectionScan( 3 );
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/* Añadir todos los cursores a MultipleIterator */
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$mi = new MultipleIterator( MultipleIterator::MIT_NEED_ANY );
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foreach ( $cursores as $cursor )
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{
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$mi->attachIterator( $cursor );
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}
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/* Recorrer todos los cursores asociados */
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foreach ( $mi as $items )
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{
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foreach ( $items as $item )
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{
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if ( $item !== NULL )
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{
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echo $item['name'], "\n";
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}
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}
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}
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?>
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]]>
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</programlisting>
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</example>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><classname>MultipleIterator</classname></member>
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<member><classname>MongoCommandCursor</classname></member>
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<member><methodname>MongoDB::command</methodname></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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